Wikipedia
encyclopedian
encyclopedically
fountainhead
smart
encyclopedial
know backwards
encyclopedism
polymath
well-grounded
knowledgeable
scholarship
erudition
learning
eruditeness
encyclopaedism
learnedness
acharya
department
encyclopediatic
wisdom
book of knowledge
A to Z
domain
general knowledge
public knowledge
well-informed
knowledge base
knowledge domain
science
know-everything
know like the back of one's hand
omniscient
literary
cabalist
kabbalist
sphere of knowledge
learn the ropes
empirical research
encyclopaedist
scholar
compendious
authority
acquaintance
encyclopedist
profundity
knowledgeful
encyclopedic
arcana
profoundness